Chock for railway cars



F. CATIGNANI CHOCK FOR RAILWAY CARS Dec. 31, 1929.

2 Sheets-Sheet Filed Feb. 28, 1929 gwuentou Francesco Calz'yzmzz p,

Dec. 31, 1929. F. CATIGNANI CHOCK FOR RA ILWAY CARS 7 Filed Feb. 28, 1929 2 Sheets-Sheet 2 gwuemto'e fiance 560 64225177 710, 7

Patented Dec. 31, 1929 airs stares PATET QFFHCE CEOCK FOR RAILWAY CARS Application filed February 28, 1929.

The present invention relates to improvements in brakes and has reference more particularly to a chock for attachment on the head of a rail and for engagement with one of the wheels of a railway mine car whereby said car will be absolutely prevented from moving on the rail whil the miner occupies a dangerous position during the filling of the car in the mine.

It has been experienced that the ordinary brakes of a railway mine car do not positively hold the car against movement and frequently during the loading of the car in the mine the jarring action will tend to release the brake and in some instances cause serious injury to the workmen standing in a position adjacent the car during the filling of the same.

It is therefore one of the principal aims 29 of my invention to provide a safety appliance that will absolutely prevent movement of the car, the appliance being of such construction as to permit the same tobe readily and easily attached or detached to the rail and for a wedging engagement between the head of the rail and one of the wheels of the car.

A further object is to provide a chock of the above mentioned character that is capable of a swinging movement in a horizontal plane whereby to properly position the chock after the supporting means therefore have been clamped on the head of the rail so that the chock may be eiiiciently used regardless whether the rail is straight or curved.

A still further object is to provide a chock of the above mentioned character that is simple in construction, inexpensive, strong and durable and further well adapted for the A purposes for which it is designed. Other objects and advantages of the invention will become apparent from the following description when taken in connection with the accompanying drawing.

In the accompanying drawings wherein like reference characters indicate corresponding parts throughout the same;

Figure 1 is a side elevation of the chock embodying my invention showing the same 59 in use.

Serial No. 343,390.

Figure 2 is a top plan view of the chock attached on a rail.

Figure 3 is a vertical sectional view taken approximately on the line 3-3 of Figure 2 looking in the direction of the arrows.

Figure 4C is a transverse section taken substantially upon the line 47- 1 of Figure 3 looking downwardly.

Figure 5 is a detail perspective view of the chock per se; and

Figure 6 is a detail perspective view of one of the rail engaging clamps forming a salient part of the present invention.

In the drawings wherein for the purpose of illustration is shown the preferred embodiment of my invention, the numerals 1 and 2 designate a pair of complementary clamps adapted to engage the opposite sides of the head of a rail A in the manner as clearly shown in Figure 3, and to this end, the opposed faces of the lower portions of these clamps are formed with the horizontally extending channels 3 whereby to form the inwardly directed lips a that engage with the underside of the head of the rail. The upper faces of the coacting clamps are substantially flat and the upper portions of the clamps are formed with registering transverse openings 5 to accommodate the elongated rod 6.

A cotter pin 7 extends through a suitable opening formed in the inner end portion of the rod 6 and a washer 8 encircles the inner end portion of this rod for disposition between the outer face of the clamp 2 and the cotter pin 7 in the manner as clearly shown in Figure 3.

I An additional cotter pin 9 extends through a transverse opening formed in the outer end portion of the rod 6 and a washer 10 encircles the outer end portion of the rod 6 for disposition against the inner side of the cotter pin.

An expansible coil spring 11 encircles the outer end portion of the rod 6 for disposition between the outer face of the clamp 1 and the washer 10 and this coil spring co-operates with the pin 7 to normally urge the coacting clamps 1 and 2 together whereby to positively maintain the same in engagement with the head of the rail A as suggested. very clearly in Figure 3 of the drawings.

A pin 12 is formed on the intermediate portion of the rod 6 and the same extends up wardly between the inner opposed faces of the coacting clamps l and 2, the upper end of this pin 12 being threaded as indicated at 13 for a purpose to be presently described. The inner opposed faces'of the upper portionof the coacting clamps 1 and 2 are grooved as indicated at .14 to accommodate the cylindrical pin 12 and this feature is clearly shown in Figure 4 of the drawings.

For the purpose of separating the eoacting clamps to facilitate the disengagement of the same from the head of'the rail A, I'provide the lever 15 that is formed at its inner end with a yoke 16. A suitable handle 17 is used on the outer end of this lever. A pair of spaced apertured lugs 18 extend outwardly from the outer face of the clamp 1 and the free ends of the arms of theyoke 16 are disposed adjacent the outer sides of the respective apertured lugs and the outer ends of these arms of the yoke 16 are also formed with apertures to communicate with the a-pertured lugs for the purpose of' receiving the pivot pin19 inthe manner as more clearly suggested in Figure 4.

Obviously by swinging the lever 15 up wardly and then pulling outwardly thereon, the jaw or clamp l ismoved outwardly along the rod-6 against the tension of the coil spring whereby to-disengage the same from the head oft-he rail and when the clamp 1 is disengaged from the head of" the rail,

' the complementary clamp 2 can also be readily and easily disengaged'from the head of the rail.

Forming a salient part of the present invention is the chock denoted generally by the numeral 20, the same comprising-a substantially rectangular shaped block 21 that is formed atone end'with the curved wheel engaging face '22.

A handle 23 extends-outwardly from the opposite end of the block at the upper portion thereof and the outer end portion of the block 21 is cut out at its lower corner to accommodate the clamps 1 and 2, the upper face ofthe cut out portion-being adapted to rest on the upper flat faces of the spring pressed clamps 1 and 2 while the bottom face of the major portion ofthe block rests on the upper face of the rail.

The outer endportion of the block 21" is formedwith the vertical hore24 to accommodate the unthreaded lower endportion of the stem or pin 12 and in this manner, the chock is capable ofswinging movement in a horizontal plane. The purpose of adjusting the chock 20 is to adapt the chock to various rails that may be either straight or curved and in Figure 20f the drawings, I have shown in dotted lines, a curved rail and the position of'the chock with respect thereto.

For the purpose of' securing the chock 20 in its properly adjusted position, I provide a nut 25 that is threaded on the upper threaded end 18 of the stem or pin 12 and the bottom face of this nut engages with the upper face of the block 21. A laterally eX- tending handle 26 is associated with the nut 25 for-manually actuating the same. It is obvious that when the handle 26 is turned in one direction, the nut 25 will move upwardly onthe threaded endlS so as to unclamp the block 21 and permit the handle 23 to be grasped and move the chock 20 so that the wheel engaging face 22 will be in proper position to engage with the tread of the wheel B of a mine car C in the manner as clearly suggested in Figure 1. I

When the parts are arranged as shown in Figure 1, the chock 20 will absolutely hold the car C from moving along onthe rails A in one direction, and after theoar has been loaded the chock can be readily and easily removed from engagement with the wheel'B and the entire device disengaged from-the rail.

It will thus be seen from the foregoingda scrlptioin-that I have provideda chockth'at will at all times be positive and eflicient in carrying'out the signed and due to can be readily and also be apparent from the foregoing description, that it is not necessary to alter the construction of the rail or the wheels of" the car to accommodate my improved chock.

its simplicity, the parts While I have shown the preferred'embodiment of my invention, it is to be understood: that minor changes in the size, shape, an'd' arrangement of parts may be resorted to purpose for which-it is deeasily'adjusted. It; will without departing fromtheispirit of the in ven'tion or the scope ofthe appended claims:

What I claim is:

1. In adevice of the classdescribed, a-vertically'v disposed'stem, means for securing the same on the head of a rail, a=chockmounted on the stem for swinging movement in a horizontal plane, said check beingformed witha wheel engaging face at one end, and means for clamping the chock in a predetermined adjusted position.

2. Ina device of the class described, a vertically disposed stem,- means for securing the same on the-head of a rail, a chockmounted on the stem for swinging'movement in "a horizontal plane, said chock being formed with aiwheel engaging face at one end, andmeans for. clamping the chock in a predetermined adjusted position, said means including a nut threaded on the upper end of the stem and adapted for clamping engagement with the upper face of the check.

3. In a device of the class described, a pair of coactingrail head engaging clamps, means for detachably securing the clamps on the head of a rail, a vertically disposed stem car-- ried by said securing means and extending upwardly between said clamps, a chock for rest upon the head of the rail, one end of the chock being formed with a wheel-engaging face, the other end of said chock being cut out for rest upon said clamps, said chock being mounted on the stem for swinging movement in a horizontal plane, and means for clamping the chock against the swinging movement.

4:. In a device of the class described, a pair of coacting rail head engaging clamps, means for detachably securing the clamps on the head of a rail, a vertically disposed stem carried by said securing means and extending upwardly between said clamps, a chock for rest upon the head of the rail, one end of the chock being formed with a wheel-engaging face, the other end of said chock being cut out for rest upon said clamps, said chock being'mounted on the stem for swinging movement in a horizontal plane, and means, for clamping the chock against the swinging movement, said means comprising a nut threaded on the upper end of the stem 4 and adapted to engage with the upper face of the chock and secure the same in binding engagement with the upper faces of the clamps.

5. In a device of the class described, a pair of complementary rail head engaging clamps, a rod extending transversely through the clamps above the rail, means associated with the rod for cooperation with the clamps to maintain the latter in locked engagement with the head of the rail, a chock having a wheelengaging face at one end, and means for mounting said chock for swinging movement in a horizontal plane on the top of the clamps as and for the purpose described.

6. In a device of the class described, a pair of complementary rail head engaging clamps, a rod extending transversely through the clamps above the rail, means associated with the rod for cooperation with the clamps to maintain the latter in locked engagement with the head of the rail, a chock having a wheel-engaging face at one end, and means for mounting said chock for swinging movement in a horizontal plane on the top of the clamps, said means including a stem carried by the rod and extending upwardly between the coacting clamps, the upper end of the stem being threaded, said chock being formed with a vertical bore to accommodate the stem, and a nut threaded on the upper end of the stem for engagement with the upper face of the chock to maintain the same in clamping engagement with the upper faces of the clamps.

7. In a device of the class described, a pair of complementary rail head engaging clamps, a rod extending transversely through the clamps above the rail, means associated-with the rod for cooperation with the clamps to maintain the latter in locked engagement with the head of the rail, a chock having a wheel-engaging fac for mounting said c ment in a horizonta clamps as an means associa facilitating the from the head of In testimony w FRANCES rpose described, and of the clamps for disengagement of the clamps hereof I affix my signature.

GO GATIGNANI. 

